Acetabular cup size trends in total hip arthroplasty  

作　　者：Daniel Patrick McKenna Alex Price Timothy McAleese Darren Dahly Paul McKenna May Cleary 

机构地区：[1]Department of Trauma and Orthopaedics,University Hospital Waterford,Waterford X91 ER8E,Ireland [2]Department of Epidemiology and Public Health,University College Cork,Cork T12 XF62,Ireland

出　　处：《World Journal of Orthopedics》2024年第1期39-44,共6页世界骨科杂志（英文版）

摘　　要：BACKGROUND Total hip arthroplasty(THA)is a common procedure for end stage osteoarthritis.The learning curve for THA is complex and challenging.One of the most difficult skills to master is acetabular reaming.We wish to identify if experience in arthroplasty leads to preservation of more bone stock.AIM To investigate if increasing surgeon experience will predict an ever decreasing acetabular cup size.METHODS A retrospective case series of four attending orthopaedic surgeons was completed.All uncemented elective total hip arthroplasties since appointment were selected for inclusion.The size of acetabular cup used was noted and logistic regression was used to identify if a trend to smaller cups existed.RESULTS A total of 1614 subjects were included with a mean age of 64 years.Overall cups were on average 0.18mm smaller per year(95%confidence interval-0.25 to-0.11,P<0.001).Individual surgeon trends showed cup sizes to decrease 0.27 mm/year for surgeon A,0.02 mm/year for surgeon B,0.15 mm/year for surgeon C and 0.29 mm/year for surgeon D.Three of the four surgeons had a more pronounced trend to smaller cups for male subjects than their female counterparts.CONCLUSION We found increasing surgeon experience to be associated with an ever-decreasing acetabular cup size.Smaller acetabular cup size may act as a surrogate marker of surgical proficiency by virtue of decreased acetabular reaming.

关 键 词：HIP ARTHROPLASTY ACETABULUM CUP Learning 

分 类 号：R687.4[医药卫生—骨科学]